Muffler.



E. l. WEISBERG.

MUFFLER.

APPLICATION FILED Aueifi. 1915.

PatentedvNov. 13, 1917.

mm m

.m r s a Edw b3:

UNITED STATES PATENT OFFICE.

EDWARD I. WEISBERG, OF ERIE, PENNSYLVANIA, ASSIGNOR EEO-GENERAL ELECTRIC COMPANY, A CORPORATION OFINEW .YORK.

MUFFLER.

Specification of Letters Patent. Patented NOV. 13, 1917- Application filed August 5, 1915. Serial No. 43,214.

To all whom it may concern:

Be it known that I, EDWARD I. WEISBERG,

a citizen of-the United States, "residing at Erie, in the countyof Erie, State of Pennsylvania, have invented certain new and useful Improvements in Mufllers, of which the following is a specification.

This invention relates to devices for v silencing the noise of the exhaust gases escaping from oil, gas, and the like motors, and

its object is to provide a muflier of extremely simple construction, which is' durable in service, eflicient in operation, and can be readily cleaned. The construction and operation will be clearly understood from the following description taken in connection with the accompanying drawing in which Figure 1 is a longitudinal axial section cast integral with the body. At its other,

end it is provided with a flange or flanges 3 by means ofwhich it can be bolted to a suitable support, such as the plate 4. The

joint between these parts may be made tight by a rib 5 on one part entering a groove in l is a central the other. Inside the body wall forming a central cyllndrical longitudinal chamber 6 which opens at one end into the exhaust pipe 7; said pipe being suitably connected with an opening in the plate 4: in

line with said chamber.

The annular space surrounding the chamber 6 is divided into two compartments by a transverse septum 8 arallel with the head 2. A ort 9 in one side of the chamber 6 connects said chamber with the compartment 10. An opening llleads from the compartment 12 to the atmosphere, preferably on the same side of the chamber 6 as the port 9. In the septum 8 are,one or more holes 13', preferably on the opposite side of the chamber 6 from the port 9. Between the port 9 and the head 2 the chamber 6 affords a dead end or cwlde saw or pocket 14 for the entering gases.-

The operation is as follows: The exhaust gases enter the chamber 6 through the pipe 7 on lines parallel with the axis of the muffler. They pass out through the port 9 into the compartment 10, in a direction at right cessive explosions.

. partment.

.angles to the path in which they entered.

At this point they divide into two streams,

. one flowing to the right and the other -to the left around the wall of the chamber 6, and

meeting in the region of the holes 13,,

through which they flow to the compartment 12, in a direction parallel to the axis of the muflier. Here they divide again into two streams which pass in opposite directions around the walls of the chamber 6 and meet at the opening 11,v through which they escape to the atmosphere, either di rectly or through an escape pipe-threaded into the opening 11, and in 'a direction at right angles to the pathof their entrance into the compartment 12. v The course of the gases is indicated by the arrows in the several figures of the rawing.

y The gases are thus compelled to change their direction of flow several times, and are also divided and united in streams which interfere and mingle; all of which aids materially in deadening the sound of the suc- The pocket 14 holds a cushion of gas which tends to smooth out with-the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the appathe-waves and steady the flow of the escapratus shown is only illustrative, and that the invention can be carried out by other means such as come within the'scope of the appended claims.

What I claim as new and desire to secure.

by Letters Patent of the United States, is

y 1. A mufiler comprising a body, end walls therefor, an" axially extending wall therein forming a central chamber, one of-said end walls having an admission opening communicating with said central chamber a transverse septum surrounding the central wall and forming two compartments which surround the chamber, said septum having one or more holes therein which connect the two compartments, a port between the chamber and one of said compartments, and an; es-

cape opening leading from the other com- 2. A muflier comprising a body, end walls therefor, an axially extending wall therein forming .a central chamber, one of said end compartments, said port being located diametrically opposite to said holes in the septum, and an escape opening leading from the other compartment on the same side of the central chamber as the said port.

3. A muifier comprising a body, end walls therefor, an axially extending wall therein forming a central chamber, one of said end walls having an admission opening communicating with said central chamber, a transverse septum surrounding the central wall and forming two compartments which sur round the chamber, said septum having one or more holes therein which connect the two compartments, a port in the wall of the central'chambernear the end where the exhaust gases enter-and opening into one of said annular compartments on the side away from theholes in the septum, and an escape opening leading from the other compartment on the same side of the central chamber as the said port.

4:. A muffler comprising a body having a .wall forming aocentral longitudinal chamber open at one end only to receive the. exhaust gases, and having a port in its wall near the end Where the gases enter, the

other end forming a cushioning pocket for the gases, and a transverse septum forming two annular compartments through which the gases flow in opposite directions around the central chamber, the septum dividing said compartments having one or more holes for the passage of the gases.

5. In a muflier, the combination of two concentric cylindrical walls, end walls therefor, a transverse septum dividing the space between the two concentric walls into two annular compartments, one of said end walls being provided with an admission opening communicating with the interior of the inner concentriccylmdrical wall, said inner concentric cylindrical wall having'an opening on one side which connects the interior thereof to the annular compartment which is adjacent the admission opening, said septum having an opening therein on the side opposite to said opening in the inner concentric wall which connect-s the two annular compartments, and said outer concentric wall having an exit opening which communicates with the annular compartment which isre- 'mote from said admission opening, said exit opening being located on the same side as is the opening in the inner concentric walll In witness whirleof, I have hereunto set my hand this seco (1 day of August, 1915. EDWARD I. WEISBERG. 

